Car-truck construction.



W. M. DUNCAN. CAR TRUCK CONSTRUCTION.

APPLICATIOILFILED JAN. 31. 1913.

Patented Sept'. 30, 1913.

. ring 17 which surrounds the journal.

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CAR-TRUCK Y ooNs'rRucrIoN.

Specification of Letters Patent. i

Patented Sept. 33, 1913.

Application filed January 31, 1913.` Serial No. 745,499.

To all whom may concern Be it kno-wn that I, WILLIAM M. DUNCAN, a citizen of the United States of America, and resident of Alton, in the county of Madison and State of Illinois, have invented certain new and useful Improvements in Car-Truck Construction, of which the following is a full, clear, and exact description,

reference being had to the accompanying drawings, forming a part of this specifica-V tion.

My invention relates to a car truck construction and has vforjits object the production of an improved wheel and bearing structure including roller bearings for the wheel combined with new details of construction to produce a very durable and efficient truck structure for mine cars, or other small cars.

Figure I is aside elevation, partly in section, of a portion of my improved truck structure. Fig. II is a vertical section taken approximately through the center of the wheel. Y

In the accompanying drawings: 1 designates a bearing fastened to a car sill 2 by means of bolts 3, and 4 is a journal extending through said bearing. A wheel 5 is formed with a bore for the reception of a sleeve or lining 6, the latter being closely fitted to the wheel.

7 designates rollers located between the sleeve 6 andjournal 4, said rollers being arranged in a cage comprising end rings 8, connected by bars 9, and also connected by rods 10 passing through the rollers 7 The wheel is preferably formed with an oil well 11 having an outlet port 12 leading to the rollers 7 13 designates a cap detachably secured to the end of the journal 4, and provided with an annular flange 14 which overlaps the hub of the wheel and forms a pocket for a packing ring 15. 'Ihe bearing 1 overlaps the hub at the inner face of the wheel, and is formed with a pocket for the reception of a packing ring 16. It will be noted that the packing rings 15 and 16 serve as dust guards and prevent the lubricant from escaping around the hub of the wheel. The bearing 1 is also provided with a packiig n inner cha-fing ring 18 separates the bearings 1 from the inner face of the wheel hub, j

i and the cap 13 is separated from the outer face of the hub by a chang ring 19.

rlhe rollers 7 are retained within the sleeve 6 by the chafing rings 18 and 19 and said rings are heldin position by the bearing 1 at the inner face of the wheel and the removable cap 13 at the outer face of the wheel. The cap 13 is preferably attached to the journal by a pin 20, which may be very easily removed to permit the removal of the wheel or roller bearing cage.

I claim z- 1. A car truck structure comprising a bearing adapted to be-fastened to the car, a journal extending through said bearing, a cap removably attached to the end of said journal, a wheel, and rollers between said wheel and journal, said wheel and rollers being interposed between said bearing and g. A car truck structure comprising a bearing adapted to be fastened to the car, a journal extending through said bearing, a cap removably attached to the end of said journal, a wheel, rollers between said wheel and journal, said wheel and rollers being interposed between said bearing and cap, an outer chafing ring between the outer face of said wheel and said cap, vand an inner chafing ring located between said bearing and the .inner face of said wheel.

3. A car truck structure comprising a wheel, a journal, a sleeve surrounding said journaland closely fitted to said wheel, rollers between said sleeve and journal, means for retaining said rollers within said sleeve, said means including a bearing for said journal adapted to be fastened to the car, and a cap removably attached to the end of said journal. n

4. A car truck structureV comprising a wheel, a journal, rollersbetween said wheel and journal, a bearing for said journal adapted to be fastened to the car and provided with a flange which overlaps the hub at the inside face of the wheel, a cap removably attached to the end of the journal and provided with a flange which overlaps the hub at the outside face of the wheel, and packing interposed between said flanges and the hub of the wheel.

5. .AV car truck structure comprising a bearing adapted to be fastened to the car underframe, a journal extending through YmidYbearing, fa. 'Cap iemovalily "attached to ""the'erld 'f s'aifdjdunal, a Wheel. anged the end of said journal, and a Wheel 1r-1 between said cap and bearing, and a, Chafing ranged between said-cap-andbearino. z ring-between said ea 21nd Wheel.

6.' A car truck structure comprising a WILLIAM l ILLEN DUNCAN. 1 5 bearing adapted to be fastened itothe car In thepresenee ofunclerframe, e journal extending throughl A. B. STRATTON, "said bearing,4 a 'cap removably attaehed-to AR. CROSSMAN.

Copies of this patent may be obtained for ve cents each,4 by eidlres'sing the Commissioner of Patents, Washington, D. C. 

